Submarine boat.



L. Y. SPEAR.

SUBMARINE BOAT.

APPLICATION FILED AUG. 14, 1908. RENEWED APR. 7, 1909.

922,056,, Patented May 18, 1909.

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WITNESSES: lNVENTOR I ATTORNEY6.

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L. Y. SPEAR.

SUBMARINE BOAT. APPLICATION EILEE AUG. 14, 1908. RENEWED APR. 7, 1909.

Patented May 18, 1909.

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TlNllTED STATES PATENT @FFTQE.

LAWRENCE Y. SPEAK, OF QUINCY, MASSACHUSETTS.

SUIBIVIARINE BOAT.

Application filed August 14, 1908, Serial N 0. era ice.

T 0 all whom it may concern:

Be it known that I, LAWRENCE Y. SPEAK, a citizen of the United States,whose resi dence and post-oflice address is at Quincy, Massachusetts,have invented certain new and useful Improvements in Submarine Boats andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

When a submarine boat of the now established type is running on thesurface of the water its hull and superstructure are so com.-

pletely awash, on account of the low freeboard, that the deck hatchesare necessarily closed, and access to the bridge or platform can be hadonly through the conning tower, the hatch of which under ordinarycircumstances, is left open.

The object of the present invention is to afford, under such conditions,a passage for getting into and out of the boat without passing throughthe conning tower. It gives the crew a chance to get fresh airoccasionally by coming on deck, and aids ventilation since the hatchcontrolling this passage may be left open most of the time when in thelight condition.

Referring to the drawings which illustrate the preferred form of theinvention, and ,in which the same reference letters are applied to likeparts throughout; Figure 1 is an elevation, partly in section of thecentral por tion of a submarine boat of the established type andequipped with my invention; Fig. 2 is a lan view of the same Fig. 3 is asectional detail of a deck hatch surrounded by the hatch trunk of myinvention; Fig. 4 is a sectional plan on the line 4i4 of Fig. 5; andFig. 5 is a central section of the hatch trunk.

The hull A of the vessel carries the ordinary superstructure B with flatdeck, of vessels of this type. The superstructure may be closed againstwater or provided with scuppers or holes giving free passage for thewater to the space within the superstructure, as is customary. Thecoaming C of the deck hatch projects from the hull of the boat and isattached thereto by angles 1. Hatch cover C is hinged in position torest on this coaming when closed, and is provided with the usual meansfor fastening it on the inside when desired. Attached to coaming O andSpecification of Letters Patent.

'with a hand or guard rail around it.

Patented May 18, 1909.

Renewed April 7, 1909. Serial No. $88,489.

closing the space between it and the underside of the deck is a flangedplate E. This plate is necessary only when the superstructure is open tothe water as described above.

Surrounding the deck hatch and its cover, and preferably rising to aheight at least equal to that of the conning tower, is the hatch trunk Dwhich is secured at its lower end to the bridge or platform J which isextended to meet it. This trunk is entirely closed against ingress ofwater except at the top, which is raised to the level of the bridge andconsequently will not be flooded in any but extremely rough water, suchas would necessitate the closing of even the conning tower hatch. Thetrunk, therefore, affords a safe passage from within the vessel to thebridge, and is preferably provided, for that purpose, with ladder roundsor steps D which may of course be replaced by an ordinary ladder ifdesired.

In order that the hatch trunk may be collapsed and stowed away belowwhen the vessel is to be submerged, I preferably build it up of severalvertical strips of plating d detachably secured at their lower ends tothe deck and at their up er ends to the bridge or platform J, and colapsibly secured to one another. In the preferred form specificallyillustrated the several strips of the hatch trunk D are attached to thedeck and bridge by suitable flanges K and bolts K and are flanged alongtheir vertical edges so that they may be bolted together as shown.

The construction of the bridge or platform 5 here shown comprises anextension of the ordinary bridge from immediately about the conningtower to the hatch trunk, and is made up of a number of verticalstanchions with tie rods, supporting the bridge grating It will beobserved that the hatch trunk surrounds the hatch and its cover, so thatthe hatch may be opened and closed while the trunk is in place.

What I claim is 1. A submarine or submergible boat having a deck hatchin combination with a bridge or platform and a water-excluding hatchtrunk surrounding the hatch and cover and extending up to the platform.

2. A submarine or submergible boat having a deck hatch, in combinationwith a bridge or platform and a water-excluding collapsible hatch trunksurrounding the flanges bolted together, and secured at top hatch andits cover and extending up to the platform.

3. A submarine or subrnergible boat hav- 5 ing a deck hatch, incombination with a bridge or platform and a Water-excluding 1 i andbottom to the platforln and the dec 1 V l l l collapslble hatch trunksurroundlng the r respectively.

1 1x61 a 0 in be nnony x. ereo a 1X in sl na turc, 1n presence of twoWltnesses.

Y. SI EAR.

Witnesses E. L. BRAKE, Vi. D. FESLER.

hatch and its cover and extending up to the platform sald hatch trunkbeing made up of 10 several vertlcal strips of plating having edge

